Thanks for your answer Vincent, but what I want are user profile images (the photo of the user), not the image added to a particular tweet.
I haven’t tried yet the oEmbed option, but when I copy the embed code from the twitter panel in my web it shows without user profiles images (FYI: my web is created with Drupal).
There is a problem with my web or the user profile images never show with the embed code? oEmbed lets you show the user profile image?
The preview on the widget creation page was not working for me because of browser extensions that I guess blocked this kind of widgets, I’ve tried in other browsers and it displays OK, so custom timelines seems to be the best option right now (but I would prefer oEmbed).
Suggestions/ideas?